Parents Likely Have Inaccurate View of Children’s Digital Screentime

ANN ARBOR, Mich. – Parents likely misjudge how much time their young children are plugged into mobile devices – or how they are spending that time –  a new study suggests.

Preschoolers with their own smartphones or tablets averaged two hours of viewing a day while over half used devices for an hour or more, including 18 (15 %) who spent at least four hours on digital technology.

And those estimates often didn’t match what parents reported about their children’s mobile device use, according to the analysis published in Pediatrics.

“We found that most parents miscalculated their children’s time on mobile devices. They may also not be aware of what content is being shared or what apps are being marketed to children while they’re using their devices,” says lead author Jenny Radesky, M.D., a developmental behavioral pediatrician and researcher at Michigan Medicine C.S. Mott Children’s Hospital.

“We wanted to develop an approach to more accurately and objectively measure young children’s use of mobile technology.”

Michigan researchers developed an app to passively track mobile device use (for Android devices) and analyzed usage screen shots (for Apple devices) among 350 children ages 3-5 for a nine-month period between 2018 and 2019. They compared the data to parents’ estimates of their child’s media use.

Children used between one and 85 different apps. The most commonly used apps among three and four year olds in the study were YouTube and YouTube Kids, followed by browsers, the camera and photograph gallery, and video streaming services such as Netflix.

However, some children also engaged with apps intended for teens and adults, including those related to gambling, violent games and general audience games that may not place restrictions on the data they collect or distribute to third-party advertising companies.

“We were surprised to find that some of the content these young children were exposed to were for ages 17 and older,” says Radesky, who also authored screen time guidelines from the American Academy of Pediatrics.

“Parents may have the misconception that children are always engaging with programs that are age appropriate or educational.”

Up to 75% of young children are estimated to have their own tablet, and many infants start handling mobile devices before age one, previous research suggests. Among the children in the new study, 34% (121) had their own device.  

But measuring children’s screen time in the digital age has been limited because it often relies on parents’ recollections of how children used devices. Without reliable measurement tools, it’s more difficult to study how mobile technology use may be associated with children’s health, including sleep, obesity, and behavior issues, Radesky says.

“Mobile technology is used on demand, sometimes in small bursts through the day and takes us to this immersive place. Those features may make it more difficult to track how much time we’re spending on them compared to watching TV for example,” Radesky says.

Among parents in the study, about 37 % underestimated their child’s screen time, and 35% overestimated their child’s screen time, with most being off by an average of 70 minutes. Another 30 % of parents accurately reported children’s screen time use.

One of the main limitations of the app used to track data is that it cannot identify the user of shared devices, Radesky says, which is important in early childhood when many children do not have their own phones or tablets. But the tool brings researchers a step closer to getting a better picture of what screen time looks like for children growing up in the digital age.

“We found that electronic data collection better reflects the complex ways modern media are used because we can learn details about nuances, such as content and time of day devices are used. We are really happy with the data we get from our Android app, and are hoping that we can eventually get the same data from Apple devices,” Radesky says.

“The more meaningful the data, the better we can understand how digital technology is impacting children’s growth and development.”

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